Soft and hard
By: Angela Royston.
Edition: Rev. and updated
Series: My world of science; Heinemann first library
Publisher: Heinemann Library; Heinemann-Raintree; Heinemann
Published: 2008
Place of publication: Chicago, Ill
Language: eng
Number of pages: 32
ISBN-13: 9781432914516; 9781432914738
Subjects: Hardness -- Juvenile literature; Hardness
Genres: Juvenile literature.
Table of contents: title: Soft and hard; title: Which is softer?; title: Which is harder?; title: Choosing materials; title: Soft materials; title: Clothes; title: Filled with air; title: Hard materials; title: Plastic; title: Concrete and stone; title: Hard stones; title: Changing from soft to hard; title: Changing from hard to soft.